250 National is a long and short circuit gearbox class using 250cc single-cylinder engines, in practice the Honda CR250 is usually used. There are also sub-classes for 450cc four stroke engines and also for engines up to 180cc to accommodate the IAME 175cc Super Shifter.
National race meetings
- May 11, 2016 Glenister and Stamp dominate S4 races at Kimbolton
- March 29, 2016 British Superkart Championship, Silverstone - Photo Gallery
- August 17, 2015 X30 Super Shifter approved for the UK
- July 6, 2015 Gearbox bodywork revisions planned + IAME 175 Super Shifter approved for 250 National
Shenington Superprix - Historic & 250 National